EP2132893B1 - Système de multiplexage spatial à antennes multiples utilisant la détection de signal d'augmentation - Google Patents
Système de multiplexage spatial à antennes multiples utilisant la détection de signal d'augmentation Download PDFInfo
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- EP2132893B1 EP2132893B1 EP20080741299 EP08741299A EP2132893B1 EP 2132893 B1 EP2132893 B1 EP 2132893B1 EP 20080741299 EP20080741299 EP 20080741299 EP 08741299 A EP08741299 A EP 08741299A EP 2132893 B1 EP2132893 B1 EP 2132893B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0631—Receiver arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0656—Cyclotomic systems, e.g. Bell Labs Layered Space-Time [BLAST]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/022—Channel estimation of frequency response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0238—Channel estimation using blind estimation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03114—Arrangements for removing intersymbol interference operating in the time domain non-adaptive, i.e. not adjustable, manually adjustable, or adjustable only during the reception of special signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
- H04B7/0669—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different channel coding between antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03426—Arrangements for removing intersymbol interference characterised by the type of transmission transmission using multiple-input and multiple-output channels
Definitions
- This invention relates to transmission of information in a multiple-antenna communication system, especially relates to a technology of transmission and detection for a multiple-antenna signal.
- the existing BLAST detection algorithm may be divided to linear detection (including Zero-Forcing detection (ZF), Minimum Mean Square Error Detection (MMSE)%) and nonlinear detection (including Zero-Forcing and signal Interference Cancellation detection (ZF-SIC), Minimum mean Square Error and signal Interference Cancellation detection (MMSE-SIC)).
- ZF Zero-Forcing detection
- MMSE Minimum Mean Square Error Detection
- ZF-SIC Zero-Forcing and signal Interference Cancellation detection
- MMSE-SIC Minimum mean Square Error and signal Interference Cancellation detection
- the linear detection method is easy to be realized relatively, while with poor performance.
- the nonlinear detection method may improve the performance of the system.
- the significantly increased complexity caused by iterative interference cancellation is the main difficulty for the nonlinear detection to be put into practice.
- H Hs + n
- s an M -dimensional transmission signal vector
- r a N -dimensional receipt signal vector
- n a N -dimensional independent white Gaussian noise
- M and N are the numbers of system transmitting and receiving antennas.
- ⁇ ZF and ⁇ MMSE are M -dimensional vectors of detected signals under different algorithms respectively.
- the nonlinear detection technology may improve the system performance effectively at the price of increase of operation complexity.
- the basic principle of this algorithm is to remove the interference coming from the detected parts in the process of detecting the current signals, so as to reduce the impact that interference has on data with smaller signal-to-noise ratio. This principle is similar to the decision feedback equalization.
- k 1 , k 2 , ⁇ , k M form a sequence of transmitting antennas in the detection process.
- Process 2 is performed and the impact of the detected signals has been removed from the received signals.
- the new pseudo inverse matrix is determined and the new decision sequence is also determined.
- the BLAST linear detection method is easy to be realized relatively, while with poor performance. Compared with the linear detection method, the nonlinear detection method can improve the performance of the system. However the significantly increased complexity caused by the iterative interference cancellation is the main difficulty for the nonlinear detection to be put into practice.
- V-BLAST receivers for downlink MC-CDMA systems 2003 IEEE 58TH VEHICULAR TECHNOLOGY CONFERENCE.
- VTC 2003-FALL (IEEE CAT. NO.03CH37484), vol., 2, (2003-01-01), page 866 , discloses a downlink MIMO MC-CDMA system for very high data rate transmission and a linear MMSE V-BLAST detector per subcarrier for said system, wherein the linear MMSE detector has better performance than the ZF detector and iterative V-BLAST detectors with ZF/MMSE.
- US 2007/077969 A1 discloses maximum likelihood detection of signals in a MIMO receiver, wherein a system transformation is obtained by selecting a weighting matrix that, when linearly transforming a channel utilized for wireless communication, results in a particular transformed triangular matrix.
- EP 1 542 388 A1 discloses apparatus and methods for transmission and reception in MIMO and MISO channel based wireless systems, wherein a data sequence is transmitted from a first antenna; then interleaved; at least a part of the interleaved sequence is transmitted from a second antenna spaced apart from the first antenna, the part of the interleaved sequence being transmitted simultaneously with a part of the data sequence transmitted from the first antenna.
- This invention provides a BLAST system using enhancement signal detection. Complexity of this system is close to a BLAST system using a traditional linear detector and the performance of system according to present invention is better than the BLAST system using sequential interference cancellation nonlinear detector.
- a multiple-antenna space multiplexing system using enhancement signal detection comprising:
- this invention Compared with the ZF and the ZF SIC detection method, the BER performance of this system in this invention are improved significantly. Compared with the above detection methods, in this invention, this invention has more advantages in considering the system performance, improvement and realization complexity.
- Signal transmission module for transmitting the modulated signals.
- the signal waiting to be transmitted is s , assuming that quasi-static fading channel H remains the same between adjacent time block T 1 and T 2 .
- Re(s) indicates a real part of the complex signal
- Im(s) indicates an imaginary part of the complex signal.
- r T 1 Hs T 1 + n T 1
- r T 2 Hs T 2 + n T 2 .
- H 1 Re H Im H
- H 2 - Im H Re H
- r T 1 ⁇ Re r T 1 Im r T 1
- r T 2 ⁇ Re r T 2 Im r T 2 .
- Re s ⁇ 0.5 ⁇ H 1 + H 2 + ⁇ r T 1 ⁇ r T 2 ⁇
- Im s ⁇ 0.5 ⁇ H 1 + H 2 + ⁇ r T 1 ⁇ r T 1 ⁇ .
- Re( s ⁇ ) is a real part of the detected signal
- Im( s ⁇ ) is an imaginary part of the detected signal.
- Signal reconstruction module for reconstructing the signal detection results, then obtaining the detected signal s ⁇ .
- the reconstruction principle: s ⁇ Re( s ⁇ ) + j Im( s ⁇ ).
- Demodulation and decoding module for demodulating and decoding the detected signal, then outputting bit information.
- Expression (8) may be proved from expression (9) and (10).
- This embodiment uses a multiple antenna BLAST communication system consisting of four transmit four receive antennas.
- the channel is a quasi-static flat Rayleigh fading channel. Assuming channel remains the same between the continuous time block T 1 and T 2 .
- the system according to this invention and the BLAST system using ZF detection and ZF SIC detector are all carried out for performance simulation.
- the system according to this invention uses 16QAM modulation, while ZF and ZF SIC algorithm transmitting end use QPSK modulation.
- 1/3 Turbo code is used for coding and decoding in all algorithms.
Claims (6)
- Système de multiplexage d'espace d'antennes multiples utilisant une détection de signal d'amélioration, comprenant :un module de réception de signal (201) pour recevoir des signaux codés et modulés par un émetteur par l'intermédiaire d'une antenne ;un module de transformation de forme de signal (202) pour transformer une forme d'une matrice de canal H et du vecteur de signal reçu r, dans lequel un principe de transformation de forme de la matrice de canal H et du vecteur de signal reçu r est :un module de détection de signal (203) pour détecter les signaux reçus ;un module de reconstruction de signal (204) pour reconstruire les résultats de détection dans le module de détection de signal, et obtenir un signal détecté s̃ ;un module de décodage de démodulation (205) pour démoduler et décoder la sortie du module de reconstruction de signal et délivrer des informations de bits.
- Système selon la revendication 1, dans lequel l'antenne est une antenne à entrées multiples et sorties multiples (MIMO).
- Système de multiplexage d'espace d'antennes multiples prenant en charge une détection de signal d'amélioration comprenant :un module de modulation de code (101) pour coder et moduler des informations de bits ; etun module de transmission de signal (102) pour transmettre les signaux modulés,dans lequel le module de transmission de signal transmet des signaux selon les principes suivants :un signal en attente de transmission est s, en supposant que le canal d'évanouissement quasi-statique H reste le même entre des blocs de temps adjacents T 1 et T 2 ;dans le bloc de temps T 1, le signal de transmission est s T
1 = Re(s) + j Im(s) ;dans le bloc de temps T 2, le signal de transmission est s T2 Im(s)+ j Re(s), où Re(s) indique une partie réelle du signal complexe, Im(s) indique une partie imaginaire du signal complexe. - Procédé effectué dans un système de multiplexage d'espace d'antennes multiples selon l'une des revendications 1 à 5.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CNA2007100958913A CN101286775A (zh) | 2007-04-12 | 2007-04-12 | 采用增强信号检测的多天线空间复用系统 |
PCT/KR2008/002054 WO2008127035A1 (fr) | 2007-04-12 | 2008-04-11 | Système de multiplexage spatial à antennes multiples utilisant la détection de signal d'augmentation |
Publications (3)
Publication Number | Publication Date |
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EP2132893A1 EP2132893A1 (fr) | 2009-12-16 |
EP2132893A4 EP2132893A4 (fr) | 2014-04-30 |
EP2132893B1 true EP2132893B1 (fr) | 2015-05-20 |
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EP20080741299 Not-in-force EP2132893B1 (fr) | 2007-04-12 | 2008-04-11 | Système de multiplexage spatial à antennes multiples utilisant la détection de signal d'augmentation |
Country Status (6)
Country | Link |
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US (1) | US8199863B2 (fr) |
EP (1) | EP2132893B1 (fr) |
JP (1) | JP5037634B2 (fr) |
KR (1) | KR101413929B1 (fr) |
CN (1) | CN101286775A (fr) |
WO (1) | WO2008127035A1 (fr) |
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KR100446753B1 (ko) * | 2002-12-26 | 2004-09-01 | 엘지전자 주식회사 | 이동통신 단말기의 적응 변조 코딩 장치 |
KR100580840B1 (ko) * | 2003-10-09 | 2006-05-16 | 한국전자통신연구원 | 다중 입력 다중 출력 시스템의 데이터 통신 방법 |
GB2408898B (en) * | 2003-12-02 | 2006-08-16 | Toshiba Res Europ Ltd | Improved communications apparatus and methods |
KR100580843B1 (ko) * | 2003-12-22 | 2006-05-16 | 한국전자통신연구원 | V―blast에서 채널전달함수행렬 처리장치 및 그의처리방법 |
US7542743B2 (en) * | 2005-09-30 | 2009-06-02 | Broadcom Corporation | Maximum likelihood detection for MIMO receivers |
JP4680036B2 (ja) * | 2005-11-09 | 2011-05-11 | 独立行政法人情報通信研究機構 | 受信装置および受信方法 |
FI20075083A0 (fi) * | 2007-02-06 | 2007-02-06 | Nokia Corp | Ilmaisumenetelmä ja -laite monivuo-MIMOa varten |
-
2007
- 2007-04-12 CN CNA2007100958913A patent/CN101286775A/zh active Pending
-
2008
- 2008-04-11 WO PCT/KR2008/002054 patent/WO2008127035A1/fr active Application Filing
- 2008-04-11 US US12/527,644 patent/US8199863B2/en active Active
- 2008-04-11 KR KR1020097015681A patent/KR101413929B1/ko active IP Right Grant
- 2008-04-11 JP JP2009554460A patent/JP5037634B2/ja not_active Expired - Fee Related
- 2008-04-11 EP EP20080741299 patent/EP2132893B1/fr not_active Not-in-force
Also Published As
Publication number | Publication date |
---|---|
US20100104047A1 (en) | 2010-04-29 |
KR20090128378A (ko) | 2009-12-15 |
KR101413929B1 (ko) | 2014-07-01 |
EP2132893A1 (fr) | 2009-12-16 |
CN101286775A (zh) | 2008-10-15 |
EP2132893A4 (fr) | 2014-04-30 |
WO2008127035A1 (fr) | 2008-10-23 |
US8199863B2 (en) | 2012-06-12 |
JP2010521919A (ja) | 2010-06-24 |
JP5037634B2 (ja) | 2012-10-03 |
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